i had it at 2ohm on a RE SE 10 and it got might warm pretty quick... //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif
i ran my directed 1500d at .5 on my dual 1 ohm pbx for like 3 months and never had a problem with it. i dont know any numbers though. after imp rise you probably wont be at .5 anyways